RMG 503 - Integrated SAV System RMG 711; Special Operating Notices; Switch Gear; Special Maintenance Notices

3.1 Special operating notices
opening the safety shut-off valve (SAV)
To open the SAV main valve insert handle (712) into the corresponding bore of the disk (734) and turn.
503.20 p.09
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3. Integrated SAV system RMG 711
With control units K 10a or K 11a the SAV main valve can only be opened
if the control units have first been engaged.
To engage the control units K 10a and K 11a screw off lid, turn upside-down, and screw lid on to the
switching rod inside the control unit. Then pull the switch rod upward to the stop (see also 672.20).
The control units K 10a and K 11a are fitted with an underpressure shut-off device.
They can only be engaged if the pressure at the measuring point corresponds to the
operating pressure.
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Test switching of the control units K 10a and K 11a
Test switching must only take place if the control units K 10a
and K 11a have been fitted to the switch casing (710), otherwise mechanical damage
could result.
3.2 Special maintenance notices
3.2.1 switch gear
Prior to removing the switch bearing (707) the pressure piece (768) must be removed from
the switch casing (710).
Please note during assembly of the switch bearing:
- an angled double edge of the switch bearing must point towards the pressure piece (768).
(see 3.3.1 SAV system cross section A-A)
- the sliding ring (721) must be positioned below the switch bearing.
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Caution
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Note!
Note!